In the year 2373, an elderly Arne Darvin, traveled back to K-7 of the past, where he planted a tricobalt bomb, intended to kill Captain Kirk and prevent his own "dishonor". Darvin was ultimately caught by Captain Benjamin Sisko and the crew of the USS Defiant and returned to the 24th century. This incident caused some minor changes in the timeline to take place. In one instance, Miles O'Brien and Julian Bashir, disguised as members of Kirk's crew, became involved in a bar brawl between Klingons and Enterprise crewmembers. After the fight, Kirk lined up his officers for questioning. Prior to the temporal change, Freeman was questioned by Kirk, but the temporal incursion caused O'Brien to take his place. (DS9: "Trials and Tribble-ations")

The thirty decks of K-7 and the three outboard modules labeled K-A, K-B, and K-C mainly consisted of storage areas and industrial fabrication facilities. Among the recreational areas available on the station was a bar frequented by intergalactic trader Cyrano Jones. The manager's office featured a two-person transporter pad. The station had two docking bays for small starships and auxiliary spacecraft.

According to Star Trek Maps (Chart B), K-7 was a Federation K-class deep space station, one of seventeen such stations scattered around the periphery of Federation space at the time, to serve as resupply stations and drydocks in areas where there were no inhabited star systems.

The location of the Federation-Klingon border in "The Explored Galaxy" star chart

The registry of the NCC-K7 shuttlecraft assigned to the station suggests the possibility NCC-K7 was the registry number assigned to the station. Star Trek Star Fleet Technical Manual also depicts a shuttle assigned to Starbase 1 with a NCC-registry, NCC-6038⁄5. The shuttles not assigned to starships that appeared later on in the remastered episodes of Star Trek, such as the Picasso, were registered differently as "SB11-1201⁄1". It should be noted though that Starbase 11 the Picasso was assigned to was not a space station.

The exact dimensions of the station were not established, but it appeared to be roughly the same size as, or slightly bigger than, a Constitution-class starship.

The K-7 station itself appeared in the video game Star Trek: Elite Force II set in the late 24th century. The station was still in run down shape and owned by a Klingon named Lurok. Another K-7 type station appeared in a skirmish map on the video game Star Trek: Legacy, where it was simply labeled as a trading station.